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How does nourishment reach the embryo through placenta without direct mixing of maternal and embryonic blood?
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Answer and explanation
Correct answer: Materials exchange across thin surfaces
Step 1: Placenta provides close contact between mother and embryo. Step 2: Nutrients and oxygen pass across thin surfaces to the embryo. Step 3: Wastes from embryo can pass toward the mother.
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What is the correct answer to this question?
Materials exchange across thin surfaces
Why is this the correct answer?
Step 1: Placenta provides close contact between mother and embryo. Step 2: Nutrients and oxygen pass across thin surfaces to the embryo. Step 3: Wastes from embryo can pass toward the mother.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Reproduction.
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